The 225-issue Nikkei Stock Average gained 485.38 points, or 2.24 percent, from Friday to close the day at 22,195.38.
The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, added 26.58 points, or 1.78 percent, to finish at 1,522.64.
Marine transportation, farm and fishery, and information and communication-oriented issues comprised those that gained the most by the close of play.
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